usbloadergx/source/libwiigui/gui_sound_decoder.h

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/****************************************************************************
* libwiigui
*
* Tantric 2009
*
* gui_sound_decoder.h
*
* by ardi 2009
*
* GUI class definitions
***************************************************************************/
#ifndef GUI_SOUND_DECODER_H
#define GUI_SOUND_DECODER_H
#include <gccore.h>
#define REGISTER_GUI_SOUND_DECODER(decoder) GuiSoundDecoder::DecoderListEntry decoder##_l = GuiSoundDecoder::RegisterDecoder(decoder##_l, decoder::Create)
class GuiSoundDecoder;
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typedef GuiSoundDecoder *(*GuiSoundDecoderCreate)(const u8 * snd, u32 len, bool snd_is_allocated);
class GuiSoundDecoder
{
protected:
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GuiSoundDecoder()
{
}
; // Constructors must protected so it can create only with Init(...);
public:
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virtual ~GuiSoundDecoder()
{
}
;
// begin API
// ---------
// each Decoder must have an own static Create(...) fnc
// static GuiSoundDecoder *Create(const u8 * snd, u32 len, bool snd_is_allocated);
virtual s32 GetFormat() = 0;
virtual s32 GetSampleRate() = 0;
/* Read reads data from stream to buffer
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return: >0 = readed bytes;
0 = EOF;
<0 = Error;
*/
virtual int Read(u8 * buffer, int buffer_size) = 0;
// set the stream to the start
virtual int Rewind() = 0;
// -------
// end API
struct DecoderListEntry
{
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GuiSoundDecoderCreate fnc;
DecoderListEntry *next;
};
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static DecoderListEntry &RegisterDecoder(DecoderListEntry &Decoder, GuiSoundDecoderCreate fnc);
static GuiSoundDecoder *GetDecoder(const u8 * snd, u32 len, bool snd_is_allocated);
private:
static DecoderListEntry *DecoderList;
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GuiSoundDecoder(GuiSoundDecoder&); // no copy
};
#define BIG_ENDIAN_HOST 1 // Wii PPC is a Big-Endian-Host
#if BIG_ENDIAN_HOST
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inline uint16_t be16(const uint8_t *p8)
{
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return *((uint16_t*) p8);
}
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inline uint32_t be32(const uint8_t *p8)
{
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return *((uint32_t*) p8);
}
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inline uint16_t le16(const uint8_t *p8)
{
uint16_t ret = p8[1] << 8 | p8[0];
return ret;
}
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inline uint32_t le32(const uint8_t *p8)
{
uint32_t ret = p8[3] << 24 | p8[2] << 16 | p8[1] << 8 | p8[0];
return ret;
}
#elif LITTLE_ENDIAN_HOST
inline uint16_t be16( const uint8_t *p8 )
{
uint16_t ret = p8[0] << 8 | p8[1];
return ret;
}
inline uint32_t be32( const uint8_t *p8 )
{
uint32_t ret = p8[0] << 24 | p8[1] << 16 | p8[2] << 8 | p8[3];
return ret;
}
inline uint16_t le16( const uint8_t *p8 )
{
return *( ( uint16_t* )p8 );
}
inline uint32_t le32( const uint8_t *p8 )
{
return *( ( uint32_t* )p8 );
}
#else
#error "BIG_ENDIAN_HOST or LITTLE_ENDIAN_HOST not setted"
#endif /* XXX_ENDIAN_HOST */
#define be16inc(p8) (p8+=2, be16(p8-2))
#define le16inc(p8) (p8+=2, le16(p8-2))
#define be32inc(p8) (p8+=4, be32(p8-4))
#define le32inc(p8) (p8+=4, le32(p8-4))
#endif /* GUI_SOUND_DECODER_H */